A-A-O reactor for studying microfloras based on temperature control

The invention discloses an A-A-O reactor for studying microfloras based on temperature control. The reactor comprises a reaction tank and a sludge sedimentation tank, the reaction tank is divided intofive intercommunicated chambers which sequentially are a pre-hypoxia chamber, an anaerobic chamber, a first anoxic chamber, a second anoxic chamber and an aerobic chamber, a stirrer is arranged in each of the pre-hypoxia chamber, the anaerobic chamber, the first anoxic chamber and the anoxic chamber, the pre-hypoxia is connected with a raw water tank through a pipeline, a micro-porous aeration head is arranged at the inner bottom of the aerobic chamber, and the aeration head is connected to a blower through a pipeline; and the aerobic chamber is connected with the sludge sedimentation tank through a pipeline, the lower sludge outlet of the sludge sedimentation tank is connected with a sludge discharge pipeline and a sludge circulation pipeline, the sludge circulation pipeline is providedwith a sludge return pump,